A dam liner (or geomembrane) is a heavy, flexible, waterproof plastic sheet (like HDPE or PVC) used to line dams, ponds, and reservoirs to prevent water seepage and leakage, ensuring efficient water retention for irrigation, aquaculture, or livestock, and are durable, UV-treated, and available in various thicknesses. They are installed as an impermeable barrier, often welded to create seamless joints, and can last many years with proper maintenance, with common thicknesses being 0.3mm, 0.5mm, 0.75mm, and 1mm.
price per sqm .